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  1. #1
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    Not connected hose on an AGU 20VT

    Hello guys and congratulations for this reall helpful forum!
    I have a '98 A3 18T / AGU engine and it's remapped by ABT (193ps).
    Recently i noticed something weird on the intake manifold.
    There is a small hose that is not connected on something and it's tapped by a screw :/
    I have no idea what is this,but looks not so normal Can somebody tell me what this can be and where should be connected?
    I post two photos,so you will see exactly what i mean.

    Another question is if a N75 J valve could help me for little more boost.Is it ok to switch from my ordinary one?

    Thanks in advance,keep the good work!

    [IMG]file:///Users/macbook/Desktop/IMG_0591.jpg[/IMG]
    [IMG]file:///Users/macbook/Desktop/IMG_0590.jpg[/IMG]

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  3. #2
    S3featesV9's Avatar
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    no pictures mate...
    MODS - Custom Code phase 1, 007p DV, various powerflex bushes, EBC grooved and drilled - red stuff pads, N249 deletion. Badger5 V2 80mm TIP. Scorpion backbox + custom centre section, LCR front splitter, Jetex Fr-08001, R32 rear ARB, Forged IE rifle drilled rods, 20mm rear & 15mm front spacers.

    TO DO - Coilovers, adjustable tie arms, DP/mani/decat, FMIC and new remap


  4. #3
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    sorry.how can i post the pics pls?

  5. #4
    Alex C's Avatar
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    How To: Post pictures on the forum.

    probably a disused vacuum line that has had to have been plugged, cant see the pictures though
    Alex S3 AMK
    Bilstein B8s, H&R Springs, Neuspeed ARBs, Genuine 18" BBS LMs & LCR Brembos

  6. #5
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    one sec. I'm fixing the pics

  7. #6
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    Here you are



    Last edited by Lazaros; 30th March 2012 at 14:50.

  8. #7
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    finally i got it with the photos
    Any ideas?

  9. #8
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    That hose should be connected to your DV, unless your DV is plumbed in elsewhere, than you need to get it hooked up again asap. You'll be running effectively without a DV at all at the moment, which isn't good for the turbo.
    -------------------------------------------------------------------------------------------------

    Prawns TFSI Turbo'd 1.8T Track Car

    But I know nothing so ignore me.

  10. #9
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    yeah i know.i have lost this lovely "kick".
    It feels totally empty
    Can you send me a pic of where exactly should that be connected please ?

  11. #10
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    Looks like your FPR hose is not connected to the manifold, correct me if wrong...

    Quote Originally Posted by Lazaros View Post
    Here you are




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    The things are little complicated or just a mess...
    I took a better look right now and as i could see there's not DV but this black plastic thing that you can't connect something on it !!!
    Only a thicker hose from intake manifold goes on it and then it's plugged on the air flow manager hose.
    What can i do ???

  13. #12
    Prawn's Avatar
    My other car is a MINI!!!!

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    Wow, that's royally bodged, and will be slow as hell! Your diverter valve has been removed and replaced with a bit of pipe.

    You now have in effect NO turbo at all! and a massive 25mm bore boost leak!

    get a diverter valve back in where that bit of pipe is, and plumb the blocked vacuum feed into the small nipple on the DV and you'll gain about 50bhp instantly!
    -------------------------------------------------------------------------------------------------

    Prawns TFSI Turbo'd 1.8T Track Car

    But I know nothing so ignore me.

  14. #13
    Alex C's Avatar
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    yeah there is no DV there. The black plastic thing you talk of is the hockey puck valve and its for the PVC system, that bits fine.

    just realised thats plumbed right through, why would someone do that?
    Alex S3 AMK
    Bilstein B8s, H&R Springs, Neuspeed ARBs, Genuine 18" BBS LMs & LCR Brembos

  15. #14
    gregor571's Avatar
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    I have never seen an 1.8t with your pipe config, it is very strange...

  16. #15
    sportquattro's Avatar
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    As gregor571 says that looks to me like the vac hose for the FPR and should be connected under the manifold
    1999 Audi S3 Superchips remap, Forge 007p, Phatnoise, Black Diamond Discs & DS2500 pads, N249 Deleted, Badger 5 TIP, Poly dogbone bush, Bilstein B8's and Eibach Springs.

    1986 Audi Coupe Quattro 2.2 restoration project

  17. #16
    Prawn's Avatar
    My other car is a MINI!!!!

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    Guys, look at both pics above, it's pretty clear that the old DV hose and the FPR hose cross over creating an illusion.

    the FPR is plumbed in fine, the hose you see capped off is the DV hose, which goes perfectly with the removed DV.

    Sadly, whoever removed the DV should have blanked the two pipes, not joined them. At least that way the car would ahve run fine but had mild compressor stall, not a massive issue if the car isn't mapped.

    What this has done is created a MASSIVE boost leak, and the poor little turbo is probably going nuts trying to make requested load
    -------------------------------------------------------------------------------------------------

    Prawns TFSI Turbo'd 1.8T Track Car

    But I know nothing so ignore me.

  18. #17
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    Yes guys,that happened after a reparation because of a crack on the main block.
    I replaced the whole block,but the mechanic (as i can see) was not the best one.
    When i bought the car,it was just amazing and was pulling like hell.
    Anyway...How much a DV costs right now?

  19. #18
    Metro's Avatar
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    OEM dv is under £10 iirc and a forge 007p can be picked up on eBay for £60ish

    Audi A3 1.8t AUM
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  20. #19
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    Infact I have an oem plastic one you can have... Only a year old. Where are you based?

    Audi A3 1.8t AUM
    Forge 007p, Pipercross Panel Filter, Eibach Prokit 35mm drop, EBC Green Stuff Pads
    Groved Disks, HEL Braided Brake Lines with Dot 5.1 fluid.
    Creation Motorsport Silicone TIP,
    N75 hoses, DV Hose & 10mm Rear Wheel Spacers
    Powerflex Rear Beam Bushes & Diesel Dog Bone Bush
    8k HID Kit, 8k LED Side Lights, 8k Number Plate LED




  21. #20
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    I'm living in Sweden mate.I have already ordered one.Thanks anyway

  22. #21
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    I'm living in Sweden mate.I have already ordered one.Thanks anyway

  23. #22
    Metro's Avatar
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    haha alright matey, thought id offer, I was going to chuck it away earlier before I saw this thread so thought its better to go to a good home, ill chuck it then

    Audi A3 1.8t AUM
    Forge 007p, Pipercross Panel Filter, Eibach Prokit 35mm drop, EBC Green Stuff Pads
    Groved Disks, HEL Braided Brake Lines with Dot 5.1 fluid.
    Creation Motorsport Silicone TIP,
    N75 hoses, DV Hose & 10mm Rear Wheel Spacers
    Powerflex Rear Beam Bushes & Diesel Dog Bone Bush
    8k HID Kit, 8k LED Side Lights, 8k Number Plate LED




  24. #23
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    hahahaha!!!Distance killed the feeling :P Cheers mate!

 

 

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